Duplicating machine



June 14, 1938.

S.-W. FUNK ET AL DUPLICATING MACHINE Filed June 23, 193s 3 Sheets-Sheet l June 14, 1938. I Q s. w. FUNK ET AL 2,120,247

DUPLI CATING MACHINE.

Filed June 23, 1936 I 3 Sheets-Sheet 2 June 14, 1938. s. w. FUNK ET AL 2,120,247

DUPLICATING MACHINE Filed June 23, 1936 3 Sheets-Sheet 3 Patented June 14,1938 i 2,120,247

UNITED STATES PATENT OFFICE 2,120,247 DUPLICATING MACHINE Samuel W. Funk, Charter Oak, Paul Sauble Funk, Covina, and Isaac Funk, Charter Oak, Calif.

Application June 23, 1936, Serial No. 86,756

20.0Iaims. (01. 101-118) Our invention relates to a duplicating machine may be located at different sections of the peof a type for mimeographing and especially deriphery of such drum. Therefore, a feature of signed for mimeographing on cards. In such our invention is providing a timing or registermimeograph machines the stencil is secured to ing mechanism which so regulates the feed of the the mimeograph drum, the ink being applied card that it engages with the stencil drum at the 5 inside of the stencil drum. A pressure roller enproper part of its periphery to bring the printed gages one side of the paper or card being passed matter into the desired and correct location on through such machines and holds the paper or the card or paper. This is accomplished by a card in contact with the stencil drum. movable gear train interlinking the drive for the An objection to the former types of machines stencil drum and the drive for the feed roller. As 10 is that should the machine fail to feed a sheet of the stencil drum is usually rotated by a crank or paper or card during rotation of the stencil drum similar device the drive is thus from the stencil the pressure roller which functions to hold the roller to the feed roller and the timing, that is, paper or card in contact with the drum develops a the angular relationship of the peripheries of the coating of ink which gives an objectionable ink stencil drum and the feeding roller may be varied 15 impression on the back or reverse side of the card by shifting the gear train. In this gear train we or paper. therefore provide an idler gear intermeshing be- Therefore, one of the main objects and features tween a driving and a driven gear, the idler gear of our invention is providing a movable pressure being mounted on a lever for transverse moveroller or similar device which is normally retained ment across the line intersecting the shafts of out of pressure relationship with the stencil the driving and driven gears, the movement, how- 20 drum, that is, spaced therefrom, and it is only ever, not being sufiicient to disengage the movwhen a card or sheet of paper is being passed in able idler gear from either of the other gears. contact with the stencil drum that the pressure A further object and feature of our invention of roller is brought into pressure engagement with a detail nature is providing a guide and support- 25 the card or paper to secure the sufficient pressure ing device for thin sheets of paper so that these for the imprint on the card or paper. will not be unduly deflected upwardly by the ac- Another detailed feature of our invention is tion of the pressure roller which co-acts with the controlling and actuating the movement of the stencil drum, the paper or cards to be fed being pressure roller to its operative pressure position usually held in place back of the guide device by a 30 in connection with a card or paper feeding roll, weight placed on a stack of cards or paper. this having a cam which may be engaged by a A further feature of our invention is an imroller connected to a tilting frame on which the provement in the stencil drum and in a brush pressure roll is mounted for elevating such roll for spreading the ink on the interior of the drum.

5 to its operative position at the same time that a This construction involves having a longitudinal card or paper is fed between the stencil drum and opening in the drum between the end clamps of the pressure roll. the stencil. The brush forms a segment of a A further and important feature of our invencircle comparatively thin in an axial direction, tion is controlling the movement of the pressure which may be inserted through this slot or openroll into operative position by the actual card or in the drum and turned into a position across the 40 paper being fed to the machine, this being done diameter of the drum so that the ink may be by having a trigger finger which is normally held smeared from end to end of the stencil drum on in a vertical position, that is, transverse to the the inside and the brush have upwardly extenddirection of movement of the card or paper and ing ends to wipe the ink the full length of the which by the forward movement of such card or stencil considered around the periphery of the 45 paper is tilted or inclined in the direction of feed, drum.

this action causing a lateral swinging movement Our invention is illustrated in connection with of the control roller connected to the tilting the accompanying drawings, in which:

frame to bring the same into engagement with a Figure 1 is a side elevation taken in the direccam operatively connected with a feed roll. tion of the arrow l of Figure 2 showing the out- 50 In the ordinary stencil machine it is difficult to side of the case.

obtain the desired registry of a card or paper Figure 2 is a plan taken in the direction of the with the stencil roll when only a portion ofthe arrow 2 of Figure 1.

card or paper is to be printed, that is, the stencil Figure 3 is a vertical transverse section on the only extends partly around the stencil drum and line 3-3 of Figure 1 in the direction of the arrows 55 showing in elevation the feeding roll and the roller on the lever arm for raising the pressure roller together with the cam for operating such pressure roller, the gear for driving the said roller being shown in section.

Figure 4 is a vertical transverse section on the line 4-4 of Figure 1 in the direction of the arrows showing the rotary stencil drum in elevation, the tilting finger for controlling the pressureroller and the pressure roller also in elevation and part of the tilting lever having the roller for actuating the pressure for raising and lowering .the

same.

Figure 5 is a horizontal longitudinal section taken substantially on the line 55 of Figures 3 or 4 showing the feeding rollerand ithepressure roller in plan together with a plan of the frame for carrying the pressure roller.and. the actuating arm and roller for operating the tiltingarm.

Figure 6 is a vertical longitudinal section'taken substantially on the line 66 of Figure 3 in the direction of the arrows showing principally the gear drive for the feeding roller in relation to the stencil and the means for actuating the gear train to change the timing of the feed and printingin accordance with the peripheral length of the stencil on the stencil drum, that is, the amount ofprintedmatter to be printed on cards or paper.

Figure 7 is a vertical longitudinal section on the line 'i'-l of Figure 3 in the direction of the arrows showing the stencil drumand pressure roller in section, the feeding drum, the control cam and the tilting arm with its roller in elevation, the control pin being shown elevated and the pressure roller in its lowered position.

Figure Bis a view similar to Figure 7 showing the initial action in a downward tilt of the control fingers in the operation of feeding a card or paper.

Figure 9 is a view similar to Figures '7 and 8 but showing the action of the control lever with its roller engaging the control cam and the pressure roller forced upwardly to press a card or paper into contact with the'stencil drum.

Figure 10 is a perspective view of a'vertical guide plate positioned adjacent the stencil drum for preventing an upwarddeflection of a thin card or thin paper in the action of stencilling.

Figure 11 is a perspective view of a portion of the cover plate of the case showing the forward edge thereof.

Figure 12 is a side elevationtaken in the direction of the arrow 12 of Figure 13 of the inking device operating inside of the stencil drum.

Figure 13 is an edge elevation of Figure 12 taken in the direction of the arrow I3.

Figure 14 is a detail section of the upper part of the guide or pressure shoe assembly, the section being similar to that shown in Fig. '7

In our invention we use a case or housing H having side walls l2 and 13. There is an upward extension M at one end. The device has a closedfront wall I5 and a rear wall 16. A cover plate i! extends across the top of the side walls l2 and i3 and has a central opening l8 for action of the feeding roller, this top forming a platen for supporting a stack of cards crpaper indicated at E8, these being held in place by a weight 20.

The stencil drum .25 has stub shafts of the usual character 25 journaled in the upward extension i l of the sides and is preferably driven by a crank 27. This drum hasthe clamp'or engaging devices28 for thestencil leaving a longitudinal space or.opening 29 between the clamps, this .place .by a-cotter pin 52.

.strap 38 and having upper and lower flanges 44 and 45.

A tilting arm designated by the assembly numeral 59 has a normally vertical section 5! ex- :tending through perforations in the flanges 44 and 45 of the channel bracket 42, being held in There is a horizontal arm portion 53 which carries on one side a cam engaging roller 54, this having a stub axle 55 mounted on the outer end of the arm. A resilient rod56 in the form of a spring is secured to the strap 38 at 57 and extends downwardly, having its lower end 58 engaging inside the horizontal section 53 of the arm 50. sion, normally acting to swing the arm and the roller "54 to its outward inoperative position of Fig. 5.

A trigger finger designated by the assembly numeral 60 is pivotally mounted. in a bracket 6| secured to the strap 38. This has a pivot 62 parallel to the strap. The upper end of the trigger finger is designed to extend above the top I! of the case and thus above the lowermost cardor sheet fed to the stencil but it may tilt from the upright position of Fig. 7 to the tilted position of Figs. 8 and 9, being pressed to this position by a card or sheet of paper being fed by the feed roller hereinunder described. A link 63 is connected to this trigger pin and attached to the link there is a tensionspring 64. The lower end of this spring is secured at 65 to the horizontal section of the arm 50. Normally when the trigger finger is in the upright position of Fig. 7 there is not sufficient tension on the spring to pull the arm laterally inwardly from the position of Fig. 5. However, when the trigger finger is tilted downwardly to the position shown in Fig. 8 it pulls the horizontal section of the arm 53 inwardly in the direction of the arrow 66. (Note Fig. 5.) This brings the roller 54 into position to be engaged by a rotatable cam 10. This cam has a'segmental cut-out section 1| having a slight concave curve, rounded end portions 12, and a concentric cam edge 13. The cam rotates in the direction of the arrow 14, (note Fig. 8) and when the frame 35 occupies a horizontal position with the pressure roller 39 in its lowermost position the roller 54 may be moved laterally underneath the concave cam section 1 I, as shown in Fig. 8. This pressure roller is of suificient weight so that due to the action of gravity it normally occupies the position shown in Figs. '7 and 8, spaced from the stencil drum. The action of the roller 54 .engaging the cam is to tilt the frame 35 and thus ly no spacing betweenthe end of one card or This rod is under tensheet and the next the trigger does not have time to come to its vertical position and thus the arm 53 to swing outwardly.

The feed roller 80 is mounted on a shaft M which is journaled in an adjustable journal bar 82 having vertical slots 83 therein, each journal bar being secured by bolts 84 to the sides I2 and I3 of the housing or frame. This allows an accurate vertical adjustment of the feed roller and of the cam which. is secured thereto so that the friction feeding pad 85 secured to the periphery of the feeding roller will pass a sufficient distance through the opening I8 in the top plate or platen I? to engage the underside of the card or sheet of paper. The edges of these are confined in the usual manner by anchoring stops indicated at 36 and adjustable in the usual manner. The top plate I! has an end notch 8'! to provide for the action of the trigger finger 60.

The timing mechanism for registering the time or position of contact of the card or paper with the portion of the stencil having the mimeograph material to be copied is by the timing gear train designated by the assembly numeral 95. This is located on one side of the frame of the machine. The stencil drum is illustrated as rotating in the direction of the arrow 9I (note Fig. 6) and has a driving gear 92 connected thereto. This meshes with the first driven gear 93 rotating on a stub axle 93 supported in one side of the casing. A second idler 95 is also mounted on a stub shaft 96 and a third idler gear 9'! is mounted on a stub shaft 98. This latter gear may be regarded as a driving gear and meshes with a movable timing gear 99 which has its axle I09 mounted on the short end Ilil of a double lever I02. This double lever is fulcrumed as indicated at I03 on the axle of the feed roller. The gear 99 meshes with the driven gear I04 connected to the shaft 8! of the feed roller 80 and cam Ill. The long arm 565 of this double lever extends through a slot I05 in the end I5 of the housing. One edge of this slot is serrated as indicated at I01 to en gage a spring rod I08 attached to the lever I 05 and thus holds this lever and the train of gears in the position desired.

With this construction it will be noted that by moving the long end E05 of the double lever I96 upwardly or downwardly the shaft I09 of the timing gear 99 swings in an arc I09. This are is concentric to the driven gear it! for driving the feed roller and its connected cam. The movement, however, is never Sufi'icient tn bring h teeth of the timing gear 99 out of mesh with the teeth of the idler or transfer gear 91 but it will be appreciated that by moving the gear 99 up or down that a relative change of the timing of the feed roller and the time of the drum may be changed or altered in order to bring a card or paper into engagement with the stencil drum on the desired position on the periphery of this drum for purposes of printing. The spring rod I08 engaging in the serrations II retains the double lever 92 and hence the timing gear 99 in the adjusted position.

The guide or pressure shoe for use particularly with thin paper is designated by the assembly numeral I l (note particularly Figs. '7, l0 and 14) This employs a transverse plate H6 which is secured by screws I I! on the upward extension of the frame in which the stencil drum is mounted.

The lower edge 5 18 of such plate is spaced above the top or platen i! on which the cards or, paper rest. A slide plate H9 fits on the forward side of the stationary plate H5 and has a horizontal shoulder I20 at the top. A threaded stud I2I is secured to the rear side of the fixed plate H6 and extends upwardly through a perforation in the shoulder I20 and has an operating nut I22 threaded thereon to give a downward thrust to the slide plate H9. The lower edge I23 of such plate ispositioned slightly above the top or platen ll for passage of cards or the sheets of paperth'ereunder. Pressure shoes I2 1 in the form of angle straps have vertical portions I25 secured to the plate H9 and have outwardly extending end portions I29 to engage the upper side of sheets of paper or the cards while being fed toward the stencil drum. A fixed pin I2! is secured to the rear side of the fixed plate H6 and a second pin I28 extends outwardly from the plate II 9, these pins being connected by a tension spring I29, this spring thus'being under tension to lift the sliding plate II9 with the pressure shoes I2 5. Therefore, by threading the a convex edge I32, such edge conforming to the curve'of the inside of the cylinder forming the stencil drum. An inking pad H3 is secured on the outside of the edge I33 and extends upwardly over end shoulders E34, which extend above the upper edge I35 of the block, this pad being bent' downwardly as indicated at I36 and thus having a rounded upper part I37. Ahandle I38 is secured by a screw I39 or the like to the block I3I. This type of inking brush for spreading the ink is a relatively important feature in that it per mits the construction of a stencil drum of small diameter having a narrow slot or opening 29 between the stencil clamps. This type of brush may be turned edgewise and inserted through this opening and then turned crosswise for purposes of spreading the ink on the inside of the stencil drum. The upper side portions of the inking pad extending upwardly over the shoulders I 34 are sufficiently flexed so that the brush may work the ink close to the stencil clamps inside of the stemcil drum and thus give a complete inking of the stencil from one end to the other of the stencil drumand from the position contiguous to the clamps.

In order to provide a desired resiliency in the action of the pressure roll 31, the pivot rod or shaft 40 on which the rocking frame assembly designated by the assembly numeral 35 is made in the form of a spring so this may flex downwardly slightly due to paper or cards being printed having different thicknesses. The movement required is very slight and the pivot rod may be mounted at its opposite ends at II in such a manner as to allow flexing of this pivot rod 40.

The weight 20 is so constructed as to concen-' trate its pressure at the center portion and therefore has a flat undersurface I 45 on the bottom and in the center portion extending from side to side, the said weight fitting between the anchoring stops 8%. The weight has a thin web E46 extending in opposite directions from the center portion. A slight shoulder I41 extends transversely across the weight at the front and rear edges of the fiat portion I45 and the web is inclined downwardly so that the tip edge I48 is de-.

ifined'to have-a light contact with the uppermost card or sheet of paper in a stack [9. .One end of the web contacts the paper or cards'adjacent one edge,such being the edge in contact with the slide or stripper plate N9, the lower edge I23 of such plate as above mentioned, being positioned to permit only a single card or a single sheet to :pass underneath when fed by the friction pad185. By this construction the main weight of the 510 weight device 20 is concentrated through approximately the center portion of the sheets or cards over the opening I8 and the'portion of the card or paper engaged by the pad 85 in the feeding operation. This gives a somewhat more accurate'feeding of the lowermost card or sheet of paper so that the margin from its leading end to the point of imprint of the printing stencil is always substantially the same on each card or sheet whereas with a sheet which is entirely flat on its lower surface and has the weight distributed over a large area of the stackof cards or sheets, sometimes increases the friction between adjacent cards or sheets so that the leading margin on the card or sheet is not always uniform.

Various changes may be made in the details of construction without departing from the spirit or *scope of the invention as defined'by the appended claims.

We claim:

1. A duplicating machine comprising,-in-combination, a rotatable stencil drum, a pressure roll toengage paper when passed betweenthe drum and the roll, means to urge and retaintheroll normally 'out of pressure relationwiththe drum 1535 when there is no paper feed, and'means to move the pressure roll into pressure relation with a sheet of paper'when' said paper is fed between the roll and the'drum for printing, the pressure roll being mounted in'a tilting frame balanced to normally maintain the roll spaced from the drum,

a positively driven means actuated from the drum, and an interconnection from said driven means to the tilting frame to move saidframe and thereby bring said roll into operative relation 45 with the drum.

2. A duplicating machine comprising-in combination, a rotatable stencil drum, a 'tilting frame having'a pressure roll mounted therein, means to normally urge andretain the'pressure roll in a spaced and inactive position relative to the drum, a trigger device actuated by a sheet of paper when being fed betweenthe drumand the roll to control the movement'of the tilting frame, and means to actuate the tilting frame "to move the roll into pressure relationwith the drum with the sheet passing between the roll and the drum, the means to actuate the'tilting frame comprisingan arm connected'theretm'acam positively driven in connection with the drum, and a con- F60 nection from the trigger device-to move said arm into operative relation with said cam.

3. A duplicating machine'comprising, in combination, a case or housingstructure having a rotatable stencil drum therein, a tilting frame 2 having a pressure roll,-said frame 'beingactuated by gravity to normally-urge and'maintain the roll in a spaced and inactive relation to the drum, a tiltable trigger device, means" to normally position-said device to be engaged by'paper to be T70 printed thereon, said paper being adapted to ac- ;75'sheet or paper" the tilting frame isactuated 'to operated on by the cam when the said trigger device is moved by a sheet of paper. 10

5. A duplicating machine comprising, in com- 'bination,--a housing structure having a rotatable stencil drum, a tilting frame having a pressure rollmounted therein, an oscillating arm con- -nected to the tilting frame, a rotatable cam, means to rotate the drum, a drive from the drum to .the cam, said arm having a contact roller, a

'spring-means-to normally retain'said roller out "of contact "withthe cam when-the pressure roll is inrits spaced and'inoperative relation tothe'20 "drum, a pivotallymounted trigger fingeripositimed to be engaged by a sheet of paper on being fed to the drum, the paper being adapted to tilt 'th'e'triggenfinger, a connection from the trigger fingertothe oscillatingarm to bring the contact roller into engagement with the cam, said oscillating-arm being adapted to'actuate the tilting frame to movethe pressure roll into a pressure relation with the sheet of paper and the drum.

6. -A duplicating machine as claimed in claim '=5, the trigger finger being pivotally mounted on the tilting frame, there being a spring connecting the trigger finger and the oscillating arm and forming'a-means for normally retaining the trigger finger in the path of a sheet of paper, and also said spring beingoperative to move the oscillating -arm to" bring the contact roller into engagement "with the cam.

7. Aduplicating machine" as claimed in claim 5, afeed roller having means to-engage a sheet of 40 paper and feed-said paper to the drum, said cam being interconnectedto thefeed roller.

8. A duplicating-machine comprising, in-combination, a housing structure having a stencil drum mounted therein, means to rotate the drum,

a tilting frame mounted on a pivot parallel to the axisof'thedrum, a pressure-roll mountedin the tilting-frame with its axis parallel to the axis of the drum,'an oscillating L-shaped arm mounted-on' the tilting frame at one end and having a 5 contact roller at the other end, a feed roller having cam thereon to be engaged by the contact roller, the feed roller being positioned to engage :the'underside of sheets to be fed to the stencil drum,-the'tilting frame being actuated by gravv it-ytonormally maintain the pressureroll ina spaced and inoperative relation with said drum, -means tonormally retain the oscillating arm with the contact "roller out =0f engagement with 'said'cam, a triggerfinger pivotally mounted in'GO the tilting f-rame,"a spring connecting the trigger finger and the oscillating arm and operative when no paper is being fed to position'the trigger'finger in the line of feed of the paper, the

paper being adapted to tilt the trigger finger and "exert a tension on said spring, said springbeing adapted to-oscillate said arm'to bring the contact roller'into engagement with said cam, the cam thereby actuating the tilting frame to bring the pressure roll into an operative pressure relation with a sheet of paper and the drum.

9. "A 'duplicating'machine as claimed in claim 8, a gear' train connecting the drum and the feed roller, means to shift one of the gears of the said "train to'change the relation of the feed of a sheet '75 of paper in reference to the perimeter of the stencil drum.

10. A duplicating machine comprising in combination a housing having a stencil drum with means to rotate such drum, a feeding roller, a driving gear train between the stencil drum and the feeding roller,- having one of the gears bodily movable in an arc of a circle but always maintaining a driving connection with the other gears for changing the relative timing of the drum and the feed roller.

11. A duplicating machine as claimed in claim 10, the said bodily movable gear being journaled on a lever, said lever having a fulcrum on the axle of one of the other gears whereby the movable gear moves in an arc concentric with the axle of the gear on which the arm is fulcrumed.

12. In a duplicating machine, the combination of a housing having a top with an opening therein, the top being adapted to support a stack of paper, a fixed transverse plate, a vertical adjustable transverse plate slidably mounted thereon whereby its lower edge may be adjusted above the top of the housing for passage of paper thereunder and a feeding roll operating through the said opening to engage the undermost sheet of the stack.

13. In a duplicating machine as claimed in claim 12, a weight adapted to rest on the top of the stack of paper, said weight having a central flat portion with thin webs positioned slightly above the flat portion and extending laterally therefrom, the peripheral edge of the webs being adapted to contact the uppermost sheet of paper I whereby the major portion of the weight acts through the stack of paper from the fiat surface directly over the feed roller.

14. In a duplicating machine having a housing with a flat top and an opening therein, a feed roller positioned in the housing below the opening and adapted to engage the lowermost sheet of a stack of paper on the top of the housing, means to confine a stack of paper centered over the opening, a removable weight having a central fiat portion and thin webs extending therefrom, the webs being positioned slightly above the said flat surface and one portion of the peripheral part of the webs being adapted to engage one of the confining means to center the flat surface of the weight over the said opening.

15. In a duplicating machine as claimed in claim 12, the fixed plate having paper engaging shoes, a pressure roll engaging a sheet of paper fed underneath the adjustable plate and the shoes, the shoes preventing the upward displacement of the sheet of paper.

16. In a duplicating machine, the combination of a housing having a top for supporting a stack of papers, a fixed transverse plate having paper engaging shoes adjacent its lower edge, a vertically adjustable transverse plate slidably mounted on the fixed plate whereby its lower edge may be adjusted above the top of the housing for passage of paper thereunder and means for feeding the lowermost sheet from the stack.

1'7. A duplicating machine comprising in combination a rotatable stencil drum, a cam actuated by said drum in its rotation, a movable frame having a pressure roll journaled therein to engage paper when passed between the drum and the roll, means to normally urge and retain the frame in a position with the pressure roll out of engagement with the stencil drum when no paper is being fed between the stencil drum and the roll, a trigger device mounted on the frame and positioned to be engaged by a sheet of paper fed to the drum and the roll and means actuated by the trigger when engaged by a sheet of paper to actuate a contact means on the frame to engage the said cam, the cam having a configuration to operate the frame to bring the pressure roll into active operation with the stencil drum while paper is being fed and to release the frame for movement of the pressure roll away from the drum.

18. A duplicating machine comprising in combination a rotatable stencil drum, a cam operatively connected thereto to rotate with the roll, a pivot rod, a frame pivoted thereon and having a pressure roll journaled in the frame, the frame having a movable means to engage the cam, a trigger mounted on the frame and having a portion thereof positioned to be engaged by a sheet of paper fed. between the drum and the roll and an interconnection between the trigger and the cam engaging means to make an engagement therebetween when a sheet of paper is being fed, means to normally urge the said contact means out of active contact with the cam and means to normally position the tilting frame whereby the pressure roll is spaced from the stencil drum, the contact means with the cam being operative to rock the frame on the said rod to engage the pressure roll on paper passing between the drum and the roll. 7

19. A duplicating machine as claimed inclaim 18, the pivot rod having a fixed mounting at its opposite end andsaid rod being flexible for a slight yielding movement on passage of paper between the drum and the roll, said rod when flexed changing the distance between the rod and the stencil drum.

20, A duplicating machine comprising in combination a housing, a rotatable stencil drum mounted therein, a cam operatively connected with the drum to rotate therewith in a timed relationship, a feeding means for paper operatively connected with the stencil drum to feed paper on rotation of the drum, a pivot rod, a tilting frame mounted thereon for pivoting action, a pressure roll journaled in the frame, a movable contact means mounted in the frame to engage the cam for rocking the said frame, means to normally urge the contact means into an inactive position relative to the cam, a trigger pivotally mounted on the tilting frame and having a portion thereof positioned to engage a sheet of paper being fed, an interconnection between the trigger and the cam engaging means to shift said cam engaging means into active engagement with the cam when the trigger is moved by a sheet of paper, the trigger when not so moved being inoperative to move the cam engaging means, said cam engaging means being so connected to the tilting frame to bring the pressure roll into engagement with a sheet of paper fed between the roll and the drum.

SAMUEL W. FUNK. PAUL S. FUNK. ISAAC FUNK. 

